MY TOOLBOX (WEB-APPLICATIONS)

A collection of useful tools for various hydrology and hydraulics calculations.
The tools are web-based implementations of various tools originally developed for teaching and research.
Many of the tools evolved from spreadsheets developed from 1990-present, but were re-factored to run through a web-browser.

The toolbox is a component of an on-going development and testing platform for server-side deployments of computer programs (think of a web-based HEC-HMS, QUAL2E, and such).


Linear Interpolation between Ordered Pairs A simple tool to linearly interpolate between values. Useful for testing other program outputs. Useful for one-of linear interpolation of tabulated values.

Convert Various Units A simple tool to convert units between US and SI units, mostly close approximations.

EBDLKUP-2015 and TXHYETO-2015 A report and spreadsheet tool that implements updated EBD values for rainfall intensity estimation (by county) for 2yr to 100 yr ARI and for arbitrary durations up to 24 hours. TXHYETO-2015 is a companion tool that implements the Texas Hyetograph to approximate cumulative hyetographs for use in HEC-HMS models.

Texas DDF Atlas A web-based map server that serves Texas DDF Atlas maps for estimating storm depths and rainfall intensity.

Texas Regression Equations A web-based tool implementing the Texas-specific regression equations for estimating discharge on undeveloped watersheds in Texas.

EBDUSA Prototype of Nationwide EBD Tool

Rational Runoff Equation (US Customary Units) A web-based calculator to compute peak discharge from a drainage area using the rational equation.

Rational Runoff Equation (SI Units) A web-based calculator to compute peak discharge from a drainage area using the rational equation.

Convert CFS into IN/HR A web-based calculator to convert discharge (CFS) into watershed intentsity (IN/HR).

Solids in Rivers A web-based tool that implements a Z-score distance weighted search of a solids flux database to estimate the solids flux in rivers from a minimal hydraulic description and mean grain diameter.

New Analytical Numerical Transport modeling System (NewANTS) Code under development to restore the ANTS Toolkit using Python and server-side processing.

Advection Dispersion Model Testing Code to Establish HTML to Python to Graphics Communications -- Not useful for practice

Combined Gas Law Computes mass ratio from state variables

Properties of Liquid Water (US Customary Units) A web-based "lookup" tool for properties of liquid water.

Properties of Liquid Water (SI Units) A web-based "lookup" tool for properties of liquid water.

Reynolds Number (US or SI Units) A web-based calculator to compute Reynolds Number.

Discharge from a Tank Computes discharge from a circular hole in a rectangular tank.

Discharge from a Tank Computes discharge from a circular hole in a circular tank.

Friction Factor (US or SI Units) A web-based calculator to compute Darcy-Weisbach Friction Factor using the Jain (1976) Approximation.

Discharge given Head Loss (US or SI Units) A web-based calculator to compute Discharge in a Pressure Conduit using the Swamee-Jain (1976) Approximation.

Diameter Given Head Loss (US or SI Units) A web-based calculator to compute Diameter in a Pressure Conduit using the Swamee-Jain (1976) Approximation.

Head Loss in a Pipe using Hazen-Williams formula A web-based calculator to compute head loss in a pipe using the Hazen-Williams formula (US Customary Units)

Head Loss in a Pipe using Hazen-Williams formula A web-based calculator to compute head loss in a pipe using the Hazen-Williams formula (SI Units)

Flow Between Reservoirs (No Pump) Estimate Discharge in Pipe Connecting Two Reservoirs (US Units)

Pumped Flow Between Reservoirs Estimate Discharge in Pipe Connecting Two Reservoirs (SI Units) given 3-point pump curve

Net Positive Suction Head - Available Estimate NPSHa for pump suction conditions (US Units)

EPANET On-Line Server-side implementation of EPANET (uses 2.00.12 source code)(On-going research)(Uploads require authentication)

Trapezoidal Channel Hydraulic Characteristics (US Customary Units) A web-based calculator to compute hydraulic characteristics for a trapezoidal channel.

Circular Conduit Hydraulic Characteristics (US Customary Units) A web-based calculator to compute hydraulic characteristics for a circular channel.

Slope-Area Discharge Calculator (US Customary Units) A web-based calculator to compute discharge in a channel using Manning's equation.

Slope-Area Discharge Calculator (SI Units) A web-based calculator to compute discharge in a channel using Manning's equation.

Curb on Grade Inlet A web-based calculator to compute length for a curb inlet on grade. Uses equations from TxDOT Hydraulics Design Manual (circa 2014)

SWMM On-Line Server-side implementation of EPA SWMM5 (uses current source code)(On-going research)(Uploads require authentication)

MODFLOW On-Line Server-side implementation of USGS MODFLOW (uses circa 1985 source code)(On-going research)(Uploads require authentication)

Manning's N Manning's n estimation from channel description (pull-down menu)

Roughness Height Roughness height estimation from pipe material description (pull-down menu)

Porosity and Hydraulic Conductivity Bulk porosity and hydraulic conductivity estimation from geologic material description (pull-down menu)